135151821011 has 2 divisors, whose sum is σ = 135151821012. Its totient is φ = 135151821010.

The previous prime is 135151820981. The next prime is 135151821137. The reversal of 135151821011 is 110128151531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (110128151531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135151821011 is a prime.

It is not a weakly prime, because it can be changed into another prime (135151824011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67575910505 + 67575910506.

It is an arithmetic number, because the mean of its divisors is an integer number (67575910506).

Almost surely, 2^135151821011 is an apocalyptic number.

135151821011 is a deficient number, since it is larger than the sum of its proper divisors (1).

135151821011 is an equidigital number, since it uses as much as digits as its factorization.

135151821011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 29.

Adding to 135151821011 its reverse (110128151531), we get a palindrome (245279972542).

The spelling of 135151821011 in words is "one hundred thirty-five billion, one hundred fifty-one million, eight hundred twenty-one thousand, eleven".